Cal. Civ. Code § 1812.308
(a) Except in the case of a membership camping operator substituting a campground in accordance with Section 1812.307, no membership camping operator or owner of the underlying fee shall sell, lease, assign, or otherwise transfer his or her interest in a campground except by an instrument evidencing the transfer recorded in the office of the county recorder for the county in which the campground is located. The instrument shall be in recordable form and be executed by both the transferor and transferee and shall state each of the following: